<template>
    <div class="tab_class">
        <div class="tal_class_searchBox">
            <van-search placeholder="点击前往搜索"/>
            <div class="tal_class_searchMask" @click="$router.push({ name: 'search' })"></div>
        </div>

        <div class="class_tree clearfix">
            <ul class="class_tree_nav">
                <li
                        v-for="(item, index) in categoryList"
                        :key="index"
                        :class="{active_nav: currentCategory.id == item.id}"
                        @click="changeCatalog(item.id)"
                >{{item.name}}
                </li>
            </ul>
            <div class="class_tree_content">
                <div class="class_tree_all">
                    <img style="width:250px" v-lazy="currentCategory.picUrl">
                </div>
                <div class="box">
                    <span>{{currentCategory.desc}}</span>
                </div>
                <div class="class_tree_items_wrap clearfix">
                    <div @click="toItemList(item.id)" :key="i" v-for="(item, i) in currentSubCategoryList">
                        <div class="class_tree_item_img">
                            <img :src="item.picUrl" :alt="item.name">
                        </div>
                        <div class="class_tree_item_name">{{item.name}}</div>
                    </div>
                </div>
            </div>
        </div>

    </div>
</template>

<script>
    import {catalogList, catalogCurrent} from '@/api/api';

    import {Search} from 'vant';

    export default {
        data() {
            return {
                categoryList: [],
                currentCategory: {},
                currentSubCategoryList: []
            };
        },

        created() {
            this.initData();
        },

        methods: {
            initData() {
                catalogList().then(res => {
                    let data = res.data.data;
                    this.categoryList = data.categoryList;
                    this.currentCategory = res.data.data.currentCategory;
                    this.currentSubCategoryList = data.currentSubCategory;
                });
            },
            changeCatalog(id) {
                catalogCurrent({id: id}).then(res => {
                    let data = res.data.data;
                    this.currentCategory = data.currentCategory;
                    this.currentSubCategoryList = data.currentSubCategory;
                });
            },
            toItemList(id) {
                this.$router.push({
                    name: 'category',
                    query: {keyword: '', itemClass: id}
                });
            }
        },
        components: {
            [Search.name]: Search
        }
    };
</script>


<style lang="scss" scoped>
    @import '../../assets/scss/mixin';

    .tab_class {
        overflow: hidden;
        background-color: #fff;
    }

    .height-fix {
        padding-bottom: 42px;
    }

    .tal_class_searchBox {
        position: relative;
    }

    .tal_class_searchMask {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: 9;
    }


    .box {
        width: 250px;
        height: 20px;
        text-align: center;
        font-family: PingFangSC-Light, helvetica, 'Heiti SC';
        font-size: 13px;
        position: absolute;
        top: 95px;
    }

    .box span {
        line-height: 20px;
    }

    .class_tree {
        position: relative;
        background-color: #fff;
        overflow-x: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        overflow: hidden;
        height: 100%;
        box-sizing: border-box;
    }

    .class_tree_nav {
        float: left;
        width: 100px;
        height: 100%;
        background-color: #fff;
        overflow: scroll;

        > li {
            @include one-border;
            height: 40px;
            line-height: 40px;
            text-align: center;
            border-left: 2px solid $bg-color;
        }

        > li.active_nav {
            background-color: #fff;
            border-left: 2px solid $red;
            color: $red;
        }
    }

    .class_tree_content {
        margin-left: 100px;
        height: 100%;
        overflow-x: hidden;
        overflow-y: scroll;

        .class_tree_all {
            text-align: right;
            padding-right: 10px;
            height: 40px;
            line-height: 40px;
            color: $font-color-gray;
            font-size: $font-size-small;
        }

        .van-icon-arrow {
            font-size: $font-size-small;
        }

        .class_tree_items_wrap {
            padding: 10px 20px;
            margin-right: -3%;
            margin-top: 70px;
            text-align: center;

            > div {
                float: left;
                padding-right: 3%;
                box-sizing: border-box;
                width: 33.333%;
                margin-bottom: 20px;
            }

            img {
                max-width: 100%;
            }

            .class_tree_item_img {
                display: inline-block;
                max-width: 100%;
                width: 70px;
                height: 70px;
            }

            .class_tree_item_name {
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }
        }
    }
</style>
